I was in one of the station dialogs and I clicked the button to add robots. When the robot dialog popped the close button was off the screen so I could not close it. Even after I saved and exited to the main menu the dialog stayed on the screen. I had to exit to get rid of it.
yikes, i’ll get this fixed…
edit: which version of the game was this? I can’t reproduce it 
Once happend for me too in 1.02. ESC solved the problem.
Was for 1.02. I will keep an eye out for it in 1.03. My screen is only 1280 wide so it might be due to a small screen.